PrimeDigger
We dig so you don’t
get ripped off.
Honest investigations into wellness products and digital privacy.
Digital Privacy
Who’s watching your data.
VPNs, data brokers, privacy gadgets, and AI-driven scams.
Wellness & Biohacking
What’s really in the bottle.
Supplements, wearables, sleep products, and health gadgets.
Latest investigation
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Best Vitamin C Serum (2026): We Checked 20 Best-Sellers’ Form and Strength (+ Korean Picks)
Only 3 of 20 best-selling vitamin C serums clearly state 10-20% L-ascorbic acid, the most-studied form and strength. Our picks, including Korean serums.
The claim. The evidence.
The verdict.
We read the studies, official specs and product listings so you don’t have to. We don’t run a lab or claim to test products by hand: every article shows what the evidence says, where it’s thin, and links its sources.
Evidence first.
Studies, policies, and fine print. Not press releases.
Limits admitted.
When the research is thin, we say so.
Earnings disclosed.
Some links earn a commission. It never costs you extra.
Researched and written by Mouad E. · How we research · How we earn
Start here
Our most useful guides.
The research readers come back to, checked against studies and official specs.
Digital Privacy
Protect your screen, phone and data.
Wellness
Know what you are really buying.
More investigations.
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Is AG1 Worth It? We Read the Whole Label (2026 Review + Cheaper Alternatives)
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Best Ashwagandha Supplement (2026): We Checked 22 Best-Sellers for Studied Extracts
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Best Collagen for Women (2026): We Checked the Grams in Pills vs Powders
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Best Probiotic for Women (2026): Only 5 of 16 Best-Sellers Name Their Strains
Go deeper.
PrimeDigger ebooks on wearables, supplements, remote work privacy, and AI-driven scams. $19 each.
Know a product we should investigate?
Send us the claim. We’ll dig into it.